masqmail-0.2

annotate src/online.c @ 134:43a9447c3583

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documented, yet undocumented, defer_all config option Yes, we want theses ``secret'' debugging hacks to be documented too
author meillo@marmaro.de
date Tue, 06 Jul 2010 13:45:42 +0200
parents 8a92de5e8907
children
rev   line source
meillo@0 1 /* MasqMail
meillo@0 2 Copyright (C) 1999-2001 Oliver Kurth
meillo@76 3 Copyright (C) 2008 markus schnalke <meillo@marmaro.de>
meillo@0 4
meillo@0 5 This program is free software; you can redistribute it and/or modify
meillo@0 6 it under the terms of the GNU General Public License as published by
meillo@0 7 the Free Software Foundation; either version 2 of the License, or
meillo@0 8 (at your option) any later version.
meillo@0 9
meillo@0 10 This program is distributed in the hope that it will be useful,
meillo@0 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
meillo@0 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
meillo@0 13 GNU General Public License for more details.
meillo@0 14
meillo@0 15 You should have received a copy of the GNU General Public License
meillo@0 16 along with this program; if not, write to the Free Software
meillo@0 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
meillo@0 18 */
meillo@0 19
meillo@0 20 #include <sys/stat.h>
meillo@0 21 #include <sys/wait.h>
meillo@15 22
meillo@0 23 #include "masqmail.h"
meillo@0 24 #include "mserver.h"
meillo@0 25 #include "peopen.h"
meillo@0 26
meillo@0 27 gchar *connection_name;
meillo@0 28
meillo@10 29 void
meillo@10 30 set_online_name(gchar * name)
meillo@0 31 {
meillo@10 32 connection_name = g_strdup(name);
meillo@0 33 }
meillo@0 34
meillo@10 35 static gchar*
meillo@10 36 detect_online_pipe(const gchar * pipe)
meillo@0 37 {
meillo@10 38 pid_t pid;
meillo@10 39 void (*old_signal) (int);
meillo@10 40 int status;
meillo@10 41 FILE *in;
meillo@10 42 gchar *name = NULL;
meillo@0 43
meillo@10 44 old_signal = signal(SIGCHLD, SIG_DFL);
meillo@0 45
meillo@10 46 in = peopen(pipe, "r", environ, &pid);
meillo@33 47 if (in == NULL) {
meillo@33 48 logwrite(LOG_ALERT, "could not open pipe '%s': %s\n", pipe, strerror(errno));
meillo@33 49 signal(SIGCHLD, old_signal);
meillo@33 50 return NULL;
meillo@33 51 }
meillo@33 52
meillo@33 53 gchar output[256];
meillo@33 54 if (fgets(output, 255, in)) {
meillo@33 55 g_strchomp(g_strchug(output));
meillo@33 56 if (strlen(output) == 0) {
meillo@33 57 logwrite(LOG_ALERT, "only whitespace connection name\n");
meillo@33 58 name = NULL;
meillo@18 59 } else {
meillo@33 60 name = g_strdup(output);
meillo@10 61 }
meillo@33 62 } else {
meillo@33 63 logwrite(LOG_ALERT, "nothing read from pipe %s\n", pipe);
meillo@33 64 name = NULL;
meillo@33 65 }
meillo@33 66 fclose(in);
meillo@33 67 waitpid(pid, &status, 0);
meillo@33 68 if (WEXITSTATUS(status) != EXIT_SUCCESS) {
meillo@33 69 g_free(name);
meillo@33 70 name = NULL;
meillo@33 71 }
meillo@0 72
meillo@10 73 signal(SIGCHLD, old_signal);
meillo@0 74
meillo@10 75 return name;
meillo@0 76 }
meillo@0 77
meillo@10 78 gchar*
meillo@10 79 detect_online()
meillo@0 80 {
meillo@33 81 if (conf.online_detect == NULL) {
meillo@33 82 return NULL;
meillo@33 83 }
meillo@33 84
meillo@33 85 if (strcmp(conf.online_detect, "file") == 0) {
meillo@33 86 DEBUG(3) debugf("online detection method 'file'\n");
meillo@51 87 if (conf.online_file == NULL) {
meillo@33 88 logwrite(LOG_ALERT, "online detection mode is 'file', but online_file is undefined\n");
meillo@33 89 return NULL;
meillo@33 90 }
meillo@33 91
meillo@33 92 struct stat st;
meillo@33 93 if (stat(conf.online_file, &st) == 0) {
meillo@33 94 FILE *fptr = fopen(conf.online_file, "r");
meillo@33 95 if (!fptr) {
meillo@33 96 logwrite(LOG_ALERT, "opening of %s failed: %s\n", conf.online_file, strerror(errno));
meillo@10 97 return NULL;
meillo@10 98 }
meillo@33 99 char buf[256];
meillo@33 100 if (fgets(buf, 256, fptr) == NULL) {
meillo@33 101 logwrite(LOG_ALERT, "empty online file %s\n", conf.online_file);
meillo@33 102 fclose(fptr);
meillo@33 103 return NULL;
meillo@33 104 }
meillo@33 105 g_strchomp(g_strchug(buf));
meillo@33 106 fclose(fptr);
meillo@33 107 if (strlen(buf) == 0) {
meillo@33 108 logwrite(LOG_ALERT, "only whitespace connection name in %s\n", conf.online_file);
meillo@33 109 return NULL;
meillo@33 110 }
meillo@33 111 return g_strdup(buf);
meillo@33 112 } else if (errno == ENOENT) {
meillo@33 113 logwrite(LOG_NOTICE, "not online.\n");
meillo@33 114 return NULL;
meillo@10 115 } else {
meillo@33 116 logwrite(LOG_ALERT, "stat of %s failed: %s", conf.online_file, strerror(errno));
meillo@33 117 return NULL;
meillo@10 118 }
meillo@33 119
meillo@33 120 #ifdef ENABLE_MSERVER
meillo@33 121 } else if (strcmp(conf.online_detect, "mserver") == 0) {
meillo@33 122 DEBUG(3) debugf("connection method 'mserver'\n");
meillo@33 123 return mserver_detect_online(conf.mserver_iface);
meillo@33 124 #endif
meillo@33 125 } else if (strcmp(conf.online_detect, "pipe") == 0) {
meillo@33 126 DEBUG(3) debugf("connection method 'pipe'\n");
meillo@33 127 if (conf.online_pipe)
meillo@33 128 return detect_online_pipe(conf.online_pipe);
meillo@33 129 else {
meillo@33 130 logwrite(LOG_ALERT, "online detection mode is 'pipe', but online_pipe is undefined\n");
meillo@33 131 return NULL;
meillo@33 132 }
meillo@33 133 } else if (strcmp(conf.online_detect, "argument") == 0) {
meillo@33 134 return connection_name;
meillo@33 135 } else {
meillo@33 136 DEBUG(3) debugf("no connection method selected\n");
meillo@0 137 }
meillo@33 138
meillo@0 139 return NULL;
meillo@0 140 }